Baker&#39;s reel-oven.



PATENTED UGT. 27, 1903.

0. P. IGELMANN. BAKERS REEL OVEN.

APPLICATION FILED JAN. 29, 1903.

4 SHEETS-$113311.

NO MODEL.

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F jimamm No. 742,664. PATENTED OCT. 27, 1903.

0. F. IGELMANN.

I BAKERS REEL OVEN.

APPLICATION FILED JAN. 29, 1903.

N0 MODEL. 4 SHEETS-SHEET 2.

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.No. 742,664. PATENTED OCT. 27, 1903. G. P. IGELMANN. BAKERS REEL OVEN.

APPLICATION FILED JAN. 29, 1903.

N0 MODEL. 4 SHEETS-BEEBT 4.

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UNITED STATES Patented October 27, 1903.

PATENT OFFICE.

BAIKERS REEL-OVEN.

SPECIFICATION forming part of Letters Patent No. 742,664, dated October 27, 1903.

I Application filed January 29, 1903. Serial No. 140.991.

To all whom it 11mg concern:

Be it known that 1, CHARLES F. IGELMANN, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Bakers Reel-Ovens, of which the following is a specification.

This invention relates to improvements in reel-ovens for baking purposes; and the object of the invention is to-provide driving mechanism for rotating the reel which will stop the shelves that carry the pans automatically opposite the inlet and discharge openings.

Another object of the invention is to provide means for locking the shelves edgewise toward the fire as they pass over it, so as to offer as little obstruction aspossible to the heating of a middle drum which I interpose' between the shelves and the main shaft of the reel.

Still another object of the invention is to automatically discharge the baked product from the shelves as they pass the dischargeopenings and to provide means for recharging the shelves with the unbaked dough.

I accomplish the objects of the invention by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of my improved oven; Fig. 2, a vertical section transverse to the reel; Fig. 3, a rear elevation and partial vertical section of the improved oven; Fig. 4., a horizontal section in a plane through the axis of the main shaft of the reel; Fig. 5, a detail in perspective of a shelf with the hinged bottom in raised position for dumping, the view being for the purpose of showing the operation of the dumping-lever; and Fig. 6 is a detail end view of a shelf, showing the manner in which it is locked to the arm which supports it, so as not to swing on its pivotal connection with saidarm.

Like characters of reference indicate like parts throughout the several views of the drawings.

' 1 represents the brick walls of the oven of usual construction, and 2 is the shaft on which the reel is mounted.

4 represents the arms of the reel, from the outer ends of which the shelves 5 to receive the pans of dough or the dough itself, if pans cumstances, is fed .No model.)

are not used, are suspended fromthe shafts 6,.supported by said arms. The central portion of the reel is inclosed by the drum 7, as provided in my Patent No. 717,858, issued to me on the 6th day of January, 1903, in order to save heating this unavailable space and in order to provide a refractory heated surface around this middle inside of the oven.

8 represents the inner layer of fire-brick, inside of which is the layer of asbestos 9, and the ends-of the chamber formed at the middle of the reel are closed by the asbestoslined partitions 10. The middle of the chamber-walls are supported by the web 11.

In heating up the walls of the drum 7 in the first instance, with the bottoms of the lower shelves in their normal horizontal position, as shown in Fig. 2, the shelves act as screens to keep the heat from reaching the drum. To remedy this, I lock the shelves with their bottoms parallel with the arms, so that the narrow edge of the shelf will be the only obstruction to the passage of the heat from the fire to the drum as the latter in their circuit pass between the fire and drum. This is accomplished in the following manner: The ends of the shafts 6 project beyond the arms 4 and have the cog-wheels 12 rigidly mounted thereon, so wheels and shaft and shaft and shelves turn together. The arms have a perforation through which a pin 13 is passed in the manner shown in Figs. 2 and 6, so as to enter the space between two of the cogs, and thereby hold the wheels, shafts, and attached shelves from changing their relative positions. The pins are inserted as the arms pass one of the openings into the oven for removing or charging-the latter, or a manhole may be provided through the side of the oven. The arms at the time of insertion of the pins are in horizontal position, with the pan-bottoms parallel with the arms. After the walls of the drum have become thoroughly heated the pins are withdrawn to allow the shelves to swing freely and maintain by gravity a horizontal position for their bottoinsduring all positions of the reel.

The dough, in pans or not, according to ciron the endless-belt carrier or apron 1A through the opening 15 and is deposited upon the shelf that is opposite the opening within the oven. The reel is moved intermittently and is stopped automatically in proper position to receive the dough and discharge the baked product by means hereinafter to be described.

Secured to the inner wall of the end of the oven and projecting into the path of'the cog- Wheels 12 on the shafts 6 are the cogged racks 16, which engage the teeth of said cog-wheels and rotate them, so as to tilt the shelf in the manner shown in Fig. 2 to cause the pans 17 to slide off by gravity. These pans when they leave the shelf will drop upon theinclined bottom of the discharge-openi ng 18 and will be carried to the outside of the oven by gravity. After the cog-wheel 12 passes the rack 16 it will leave the shelf free to adjust itself by gravity to receive a new consignment of dough at opening 1.5. The method of discharge just described will obtain when the reel is moving in the direction of the arrow in Fig. 2; but when the reel is rotated in a reverse direction, as is necessary with certain kinds of baking, the discharge must be made as the shelves come down from above and before they reach the'inlet-opening 15. This discharge requires a false bottom 19, which is hinged at one edge, which is the front edge of the shelf when the discharge is made and which is tilted so as to cause the baked product to slide off by gravity, as shown by dotted lines in Fig. 2 and in full lines in Fig. 5. This tilting of the false bottom of the shelf is obtained by contact of the lever 20 with the end of lever 21. The lever 20 is integral with the false bottom and is outside of the end of the shelf, and the lever 21 is pivotally secured to the wall of the oven and passes through the oven, so that the inner end of the lever 21 is in the path of the lever 20 and the outer end is outside of the oven-wall. The outer end of lever 21 is weighted with a weight 22, which is sufficient to tilt the lever20 with its attached false shelf-bottom and contents, but not sufficient to resist moves the reel-arm 4, carrying the shelf. When the arm reaches the lever 21, it will raise the Weight and move the lever out of its path, and the lever through the weight will return again to position for tilting the next shelf.

A vibratory movement may to the lever 21, so as to givea shaking movement to the false shelf 19 to jar the baked product off the shelf, if necessary, and the same action may be imparted to the shelf as it comes up from below tilating the rack-bar wheels 12 to slip.

The intermittent movement of the reel is accomplished as follows: The shaft2 has one end projecting outside of the oven-wall, and on this is a large spur gear-wheel 23. This engages the small pinion 24, and the same shaft which carries pinion 24 has the bevelpinion 25. Either the pinion 25 or the adjacent end of its shaft has the flat-sided wing-plate 26, which contacts with the flat to discharge by mu- 16, so as to allow the ner roller, over which the apron travels.

the force which.

be imparted opposite end of the shaft track 27, projecting from the side of the wheel 28. This track 27 forms only part of a complete circle, and there is room enough between the ends of the track to allow the wing-plate to rotate after it has left one end of the track and before it reaches the adja cent end of said track. On the same wheel 28, outside of the track 27 and opposite the break in said track, are the bevel-teeth 29, which engage the teeth of the pinion 25, cansing the latter to revolve as long as this engagement lasts. The shaft on which the wheel 28 is mounted has the fixed pulleys 30 and 31, between which is the loose pulley 32, and the foregoing mechanism is driven by suitable belt connection with said pulleys. The reel will be driven intermittently, and it is obvious that by suitably proportioning the several gear Wheels the reel may be made to travel just the distance between the inlet and outlet openings at each movement and to stop automatically at the required position to receive and discharge the product of the oven.

The feed of the belt or apron which supplies the dough will be controlled from the reel-shaft 2 by belting from the pulley 34 on shaft 2 to the pulley 35 on the shaft of the in- Bv properly proportioning the pulleys 34 and 35 the apron may be made to travel the requisite distance to deliver the unbaked goods to the oven, and by being connected with the reel-shaft 2 the travel of the apron will be timed to suit the movement of the shelves of the reel. To reverse the travel of the apron, the pulley 36 on shaft 2 will be connected, by means of the crossed belt 37, with pulley 38 on the apron-shaft. The clutch-coupling 39 will afiord means for engaging the proper apron-pulleys, depending on the direction of rotation of shaft 2.

Having thus fullydescribed my invention, what I claim as new, and wish to secure by Letters Patent, is

1. -In a bakers oven, a reel, shelves carried by said reel, a shaft on which the reel is mounted, acog-wheel mounted on said shaft, a continuously-rotating shaft, a wheel mounted on the continuously-rotating shaft having a track on one side forming part of a circle, bevel-teeth opposite the break in the continuity of said track, a bevel-wheel to engage the teeth of said wheel on the constantly-rotating shaft, a shaft on which said bevel-wheel is mounted, a wing-plate at the end of the last shaft to contact with the track of said constantly-rotating wheel and a pinion on the to engage the cogs of the wheel on the reel-shaft.

2. In a bakers oven an intermittently-rotating reel, shelves carried by said reel, an endless belt or apron to deliver the dough to the oven and means for intermittently driving the apron from the intermittently-rotating reel.

3. Ina bakers reel-oven, a reel having a drum, shelves carried by said arms and havbottoms thereforhinged to tilt toward one I 5 ing a swinging adjustment whereby they will edge and means for tilting said bottoms at maintain a normal horizontal position and predetermined points of the circuit of the reel 5 means for locking the shelves to the arms so without disturbing the rest of the shelf.

they will maintain an edgewise position to- In witness whereof I have hereunto set my ward the drum at all positions of the reel hand and seal, at Indianapolis, Indiana, this 20 whileIso locked; 24th day of January,- A. D. 1903.

4. n a reel-oven, a reel having a central to drum and arms, shelves suspended from said CHARLES IGELMANN arms, and means for looking the shelves to Witnesses: the arms to prevent the swinging adjustment JOSEPH A. MINTURN, of the latter with relation to said arms. 4 COLLIE E. KINNEY.

centraldrum,reel-armsextending beyond the 5. In a reel-oven, traveling shelves, false 

